<span style="font-size: small">I'm currently running an OS55AX with a 13x4 APC, it flies rather well with this engine. Iwould however like a little more power to pull out a little quicker from low altitudes, as I've been flying helis, parkflyers, and foamies and have gotten accustomed to flying in small areas and low altitudes.

Iwas thinking of trying an OS91FX or one of those ASP4 strokes as they seem to have decent reviews. Not too mention they are fairly cheap and if Idecide 4 strokes or nitro altogether is not for me I'm not out too much $$. Ican just convert this UCDto electric.

Thanks for the replies guys, keep em coming.

Aloha,
Les</span>